Studies of Properties and Composition of Loparite Ore Mill Tailings

2021 ◽  
pp. 190-198
Author(s):  
E. A. Krasavtseva ◽  
D. V. Makarov ◽  
V. V. Maksimova ◽  
E. A. Selivanova ◽  
P. V. Ikkonen
Keyword(s):  
Mill Tailings

Geochemistry of uranium mill tailings in the Athabasca Basin, Saskatchewan, Canada: A review

2019 ◽  
Vol 49 (14) ◽  
pp. 1237-1293 ◽  
Author(s):  
Jared Robertson ◽  
M. Jim Hendry ◽  
T. Kotzer ◽  
Kebbi A. Hughes
Keyword(s):  
Athabasca Basin ◽  
Mill Tailings ◽  
Uranium Mill Tailings

Screening of bacterial strains isolated from uranium mill tailings porewaters for bioremediation purposes

2017 ◽  
Vol 166 ◽  
pp. 130-141 ◽  
Author(s):  
Iván Sánchez-Castro ◽  
Ahinara Amador-García ◽  
Cristina Moreno-Romero ◽  
Margarita López-Fernández ◽  
Vannapha Phrommavanh ◽  
...  
Keyword(s):  
Bacterial Strains ◽  
Mill Tailings ◽  
Uranium Mill Tailings

Geochemistry of arsenic in uranium mine mill tailings, Saskatchewan, Canada

2003 ◽  
Vol 18 (11) ◽  
pp. 1733-1750 ◽  
Author(s):  
R Donahue ◽  
M.J Hendry
Keyword(s):  
Uranium Mine ◽  
Mill Tailings

scholarly journals Diversity and Characterization of Sulfate-Reducing Bacteria in Groundwater at a Uranium Mill Tailings Site

2001 ◽  
Vol 67 (7) ◽  
pp. 3149-3160 ◽  
Author(s):  
Yun-Juan Chang ◽  
Aaron D. Peacock ◽  
Philip E. Long ◽  
John R. Stephen ◽  
James P. McKinley ◽  
...  
Keyword(s):  
Natural Attenuation ◽  
Phospholipid Fatty Acid ◽  
Sulfate Reducing Bacteria ◽  
Activity Level ◽  
Disposal Site ◽  
Sulfate Reducing ◽  
Mill Tailings ◽  
Biomarker Analysis ◽  
Reducing Bacteria ◽  
Uranium Mill Tailings

ABSTRACT Microbially mediated reduction and immobilization of U(VI) to U(IV) plays a role in both natural attenuation and accelerated bioremediation of uranium-contaminated sites. To realize bioremediation potential and accurately predict natural attenuation, it is important to first understand the microbial diversity of such sites. In this paper, the distribution of sulfate-reducing bacteria (SRB) in contaminated groundwater associated with a uranium mill tailings disposal site at Shiprock, N.Mex., was investigated. Two culture-independent analyses were employed: sequencing of clone libraries of PCR-amplified dissimilatory sulfite reductase (DSR) gene fragments and phospholipid fatty acid (PLFA) biomarker analysis. A remarkable diversity among the DSR sequences was revealed, including sequences from δ-Proteobacteria, gram-positive organisms, and theNitrospira division. PLFA analysis detected at least 52 different mid-chain-branched saturate PLFA and included a high proportion of 10me16:0. Desulfotomaculum andDesulfotomaculum-like sequences were the most dominant DSR genes detected. Those belonging to SRB within δ-Proteobacteria were mainly recovered from low-uranium (≤302 ppb) samples. OneDesulfotomaculum-like sequence cluster overwhelmingly dominated high-U (>1,500 ppb) sites. Logistic regression showed a significant influence of uranium concentration over the dominance of this cluster of sequences (P = 0.0001). This strong association indicates that Desulfotomaculum has remarkable tolerance and adaptation to high levels of uranium and suggests the organism's possible involvement in natural attenuation of uranium. The in situ activity level of Desulfotomaculum in uranium-contaminated environments and its comparison to the activities of other SRB and other functional groups should be an important area for future research.

Sign in / Sign up

Export Citation Format

Share Document